Radiator



Jah.18, 193s. F v, STER 2,106,091

RADIATOR Filed Oct. 26, 1935 I EW/zm Ema increase the efficiency of acore and reduce the tical water conduits ll formed by pairs of re- .40.tween margins of the walls of each water con- 28. In the presentmodification one projection: 40

Patented Jan. 18, 1938 v UNITED STATES PATENT OFFICE 2,106,091 RADIATORFred L. Foster, Jamestown, N. Y., assignor to Jamestown Metal EquipmentCompany, Inc., Jamestown, N. Y., a corporation of New York ApplicationOctober 26, 1935, Serial No. 46,920

3 Claims. (01. 257-130) This invention relates to an improvement in Fig.3 is a vertical sectional view of water and cooling systems for motorvehicles, and particuair conduit strips, being taken substantially onlarly to radiators of the cellular type in which the line 3--3 of Fig.4; I l vertical water conduits and horizontal air con- Fig. 4 is a sideelevation of a water conduit,

5 duits are provided. part of one wall being broken away to show the- 5The present invention is primarily directed .other wall thereof; to thepurpose of increasing the cooling efficiency Fig. 5 is a perspectiveview of the water conof a radiator core and decreasing the cost of duitstrips; and

manufacture thereof by improvements in water Fig. 6 is a perspectiveview of a pair of interconduit strips, and improvements in thearrangefitted separator strips. ment of seating adjacent separator andwater Referring to the drawing, the reference nuconduit strips. meral I0is employed to designate a part of a Prior to this invention,developments have 00- radiator core assembly embodying one form, ofcurred in radiator construction which tended to the invention. The coreis comprised of versize thereof, thus decreasing the cost ofmanuversably disposed interfitting strips 12 and I3. facture. It hasbeen found, however, that mere Between adjacent water conduits,separator strips reduction in size without loss of cooling efficiency l5and I6 are located. These strips in conjuncis not enough, and thatfurther reduction in cost tion with the adjacent walls of adjacent waterof manufacture must be accomplished in order conduits form horizontalair conduits, the ver- 20 to meet the price requirements of automobiletical rows of which are designated as l8, l9, manufacturers that areconfronted with the conand 20. tinual problem of improving and adding tothe The strips 12 and I3, which go to make up a equipment of each motorvehicle without increaswater conduit, are preferably identical, beingas- 5 ing the price thereof, and in some instances, resembled in opposedrelationship. One only of ducing the price; these strips, therefore,will be described in detail. The principal objects and advantages of theEach strip, as shown in the drawing, necessarily, present invention areconsidered to be the proviis formed from ribbon stock and for purposession of straight water conduits; laterally directed of explanation isconsidered to be wall 22. This horizontal ribs in the walls of eachconduit which wall is broken up into lesser walls or. segments 3.project into and are engaged with corresponding 23 throughout the lengthof the strip by a plurecesses or indentures of the separator strips;rality of uniformly spaced horizontal ribs 24. soldered connectionbetween the interengaged The ribs 24 are directed outwardly of each ofsurfaces of the strips of the water conduits and the strips l2 and I3,rather than inwardly, in air conduits for the purpose of increasinginteorder to avoid direct impedance of the water..35 gral contact;increased turbulence in the flow passage. Near or at the vertical centerof each of water through the water conduits by reason strip a verticalrow of ledges 26 is provided. Each of the outwardly directed ribs in thewalls thereledge projects inwardly of the strip, being formed of; theprovision of intermediate support beby side walls 21 which terminate ina flat face duit and the abutment of the elements of this or ledge 26 isformed in each of the segments support; and also provision of waterconnection 23 and extends from one rib 24 to the next. between the frontand rear portions of the con- The front and rear margins '29 of thestrips duit, These and other objects and advantages are identical andare inwardly offset. These of the invention will be more fullyunderstood margins follow a generally zig zag path through-L145 from aconsideration of the following specificaout the length of the strip andinclude walls 30 tion taken in n un i n wi h the accompanyand 3| which,toward the outer face of the strip, ing drawing and in which meet in aflat seat 32 which is in horizontal Fig. 1 is an enlarged fragmentaryend view of alignment with, but inwardly offset from the a coreembodying one modification of this inrib24. Toward the inner face of thestrip, walls:5,0 vention; 3D and 3| meet in a fiat portion 34, similarto Fig. 2 is a vertical sectional view of the walls the seat 32,excepting that, in'this instance, the of a water conduit and adjacentseparator strips, portion 34 forms a projection to be received beingtaken substantially on the line 2--2 of by a seat 32 of thecorresponding strip. 63 Fi 4; It has long been evident that, as stockthickness of radiator cores was reduced, some means must be provided,particularly in deep cores, and preferably in all cores, to preventcollapse of the walls of the water conduit, especially during assembly.In order to assemble strips I2 and i3 margins 29 must be interfitted,thus bringing the projections 34 of one strip into contact with seats 32of the other strip. The ribs 24 of each strip, as well as the ledges 26,are thus staggered, one strip with respect to the other. The staggeredarrangement of the ribs 24 in no wise affects the assemblyof;

the core, but is useful in producing turbulence of only one modificationof his invention wherein is provided straight walled water conduits,intermediate support between the margins of the water conduit, and otherimprovements clearly shown water in the conduit, as will hereinafter bemore fully described. The staggered arrangement of the ledges 26 causesthe flat face 28 of one strip. to

overlie the recess 35 formed by the outwardly pro jecting rib 24 of theother strip. Inasmuch as the ledges 26 are greater than half thedistance between ribs 24, the ledges of one strip WiHQVerlapthe ledgesofthe abutting strip. It will thus be noted that the face 28 0f each ledgecontacts a portion of two adjacent ledges of the'other strip and bridgesthe recess 35. The water conduit is thus divided into front'and rearconduits which it is desirable'to have connected throughout their lengthfor the purpose of aiding circulation. 'Since the ledges 26 arestaggered, there is provided a plurality of staggered passageways 36-which connect front and rear conduits.

The separator strips l5 and i6 are duplicate and only one will,therefore, be described in de tail. Each strip is generally of zig zagconformation and'includes walls 38 and 39. The marginal portions ofthese walls meet in'angles 40. Itwill be understood that the separatorstrip margins .aresubstantially the'same depth as the margins 29 of thewater conduit strips l2 and I3. Between 'margins and in the outer anglesonly, inverted recesses or seats 42 are made. In each of the walls 1 and39 air deflecting projections 43 are formed. The projections of eachwall 38 and 39, as viewed from one face of the strip, are staggered withduplicate reversed inverted projections. Thus, between a pair ofprojections 43 viewed'from one face of the strip there will belocatedafdepre'ssion "44 produced by a projection on the other face 'of thestrip. Conversely, the projections 43' (see Fig. 6) provide depressionsor recesses on the otherface of the strip. It will be noted that the '50projections terminate adjacent seats '42 and,-as

a matter of fact, constitute continuations of the walls of these seatsfor the in the assembly of the core.

When the water conduit and separator strips, as above described, areassembled, the ribs124 of water conduit strips I2 and 13 project intoseats 42 of the separator strips 15 and I6; Examination of Fig. 2 ofthedrawing clearly shows that purpose of aiding contact between water andseparator strips is not mere abutment but, on the contrary, aconsiderable area of 'each rib 24 is in contactwith adjacent portions ofthe separator strips: This contact area, when the core is dipped insolder to make permanent assembly, becomes Tcoated with solder and,. so'far as transfer of heat is concerned, becomes integral. Thus, heatgenerated in the walls of the water conduit 'will be directly conductedto large areas of the separator strips from which it will be dissipatedby the air streams in conduits l8, l9, and 20. Since'it is not essentialtohave an integral connection between separator strips, these strips areseated purpose.

It will be understood that water flowing downwardly through conduitsformed by strips l2 and I3 will be free of any projection which wouldtend to interfere with rapid circulation thereof, but that at the sametime, the outwardly ofiset inwardly opening recesses 35 constitute meansfor producing turbulence in the stream, and in effectprovide swirls ineach of the recesses by which the heat of the water is readilytransferred to the ribs 24, and thence to the integrally connectedportions of the separator strips.

Although applicant has shown and described and described, it will beapparent to those skilled in -the art that further modification ofseparator and water conduit strips may be made and is contemplated, inso far as such modification lies with- I in the spirit and scope of theinvention forth in the hereunto annexed claims.

as set Having: thus set forth my invention what I claim'as new and forwhich I desire protection by Letters Patent is: i

' 1. 'In a radiator core structure having water conduits and separatorstrips interposed between said conduits, a water conduit stripcomprising a body portion, the marginal edges of the strip beinglaterally offset from said-portion and of generally 'zig zagconformation, marginally limited means in said body portion definingvertically; aligned wall segments, the segments of two adjacent stripsforming a straight 'waterconduit, a ledge formed in each of saidsegments, said ledge projecting said conduits, a water conduit stripcomprising a".

body portion, the marginal edges of said strip bei'ng laterally offsetfrom said portion and of generally zig zag conformation, a plurality ofspaced apart vertically aligned ledges in said strip, the ledges of onestrip being staggered with respect I tothe ledges of an adjacent stripand having 'overlapping'abutment whereby to support the Walls of a'waterconduit and provide fluid communication between the front and rearportions of a conduit thus divided.

3. In a radiator core structure, a water conduit strip comprising a bodyportion, the mar ginal edges of said strip being laterally offset fromsaid portion, a plurality of outwardly directed uniformly spaced ribs insaid portion, said ribs being continuous between margins and dividingsaid portion into wall segments, an inwardly directed ledge in each ofsaid segments, the ledges being in vertical alignment and substantiallycontinuous between ribs, the ledges of adjacent strips being staggeredand adapted to have overlapping abutment-a separator strip having zigzag angular bends, and seats in certain of said bends for receiving andinterfitting with said ribs during assembly of the conduit and separatorstrips of the core.

I FRED L. FOSTER,

